<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
<div id="app">
    {{ message }}
</div>
<div>
    {{ message }}
</div>
</body>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script type="text/javascript">
    var vm = new Vue({
        el: '#app',
        data() {
            return {
                message: 'Hello Imooc !'
            }
        }
    })
</script>
</html>